Description & Operation: Notes

WARNING: Vehicles are equipped with air bag supplemental restraint system. Before attempting any repairs involving steering column, instrument panel or related components, see SERVICE PRECAUTIONS and DISABLING & ACTIVATING AIR BAG SYSTEM in appropriate AIR BAG RESTRAINT SYSTEMS article.

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

Body Control Module (BCM) controls the operation of various electrical units installed on the vehicle. Systems directly controlled by BCM:

Power door lock system.
Remote keyless entry system.

NOTE: Power supply only. No system control.

Power window system.

NOTE: Power supply only. No system control.

Sunroof system.
Room lamp timer.
Key reminder.
Warning chime.
Turn signal and hazard warning lamps.

Systems controlled by BCM and IPDM E/R:

Headlight, tail lamp, fog lamp and autolight system.
Wiper.
Front washer.
Rear window defogger.

For major components and control system, see Fig 1 .

Fig 1: Identifying Major Components & Control System

Courtesy of NISSAN MOTOR CO., U.S.A.